The excessive concentration of foreign matter in the air which adversely affects the well-being of human beings, animals, plants and their environment:

1. Air Pollution
2. Pollution
3. Soil Pollution
4. Radioactive Pollution

The pollutants which are not degraded by microbes or degrade at a very slow rate:

1. Biodegradable pollutants
2. Primary pollutants
3. Quantitative pollutants
4. Non-Biodegradable pollutants

Which of the following is an example of soil pollution?

1. Disposal of solid waste in the open
2. Dumping sewage in the open
3. Overuse of fertilizers
4. All of the above.

Nuclear fuels produce pollution by …………….. .

1. heat
2. end products
3. wastes in coolants
4. All of the above.